A test device for antistatic ability of electricity purchase card

Abstract

The invention discloses an electricity purchasing card antistatic capacity test device. The electricity purchasing card antistatic capacity test device comprises a static discharger which is connected with a DC power supply. The DC power supply is connected with a PLC. An XYZ three-dimensional movement workbench is arranged below the high voltage discharge end of the static discharger. An electricity purchasing card base is arranged on the workbench. An electricity purchasing card is installed in the electricity purchasing card base. The workbench is connected with a servo controller which is connected with the PLC. The PLC is connected with a touch control screen. The touch control screen is provided with control buttons which are used for regulating the position of the electricity purchasing card and static intensity generated by the static discharger. The DC power supply comprises a high voltage power supply which is connected with an energy storage capacitor, a high voltage sampling circuit and a D / A circuit in turn. The D / A circuit is connected with the PLC which is connected with the high voltage power supply through an A / D circuit. The PLC is internally provided with a voltage generation unit which generates regulating voltage through a linear function curve and transmits regulating voltage to the high voltage power supply through the A / D circuit.

Description

technical field [0001] The invention relates to the technical field of electromagnetic testing, in particular to a device for testing the antistatic ability of a power purchase card. Background technique [0002] The user card of the smart energy meter is the electricity purchase certificate held by the power user. The power purchase and recharge need to be completed through the information interaction between the user card and the core module of the meter. State write back and other tasks. The user card chip will affect the impedance value between the pins due to the deviation of the electrical characteristics of the pins, or the contact resistance between the pins of the user card chip and the user card chip will change due to factors such as aging, friction, oxidation, and temperature, which may cause the energy meter to The misjudgment of the communication message between the meter and the user card will affect the reliability of the smart energy meter in the process of...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a test device for the anti-static ability of the electricity purchase card. The high-voltage output adopts the high-voltage hierarchical compensation, which solves the problem of low precision of the high-voltage output, and the precision is better than 3%, ensuring that the test voltage reaches the standard requirement level.

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